Ethernet unused pins

Can someone explain me why the 4 unused pins on an Ethernet RJ45 connector (4,5,7 and 8) are first tied together (4 with 5, 7 with 8) and then connected via resistors to a cap.

Is this an EMI issue or am I missing something?


- Rene

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Greg Neff VP Engineering

*Microsym* Computers Inc.
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Greg Neff

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